Rotary pump or the like.



No. 647,856. Patented Apr. 17,1900.

F. MABBURG, 1R. ROTARY PUMP OR THE LIKE.

Application filed Apr. 26, 1899.) (No Model.)

3 Sheets-Sheet l.

WITNESSES: 3} 24 INVENTOR *7 6 Oath/a0 M m: perms PETERS 00.. mowurna,wuumumm-Wc.

Patented Apr. l7, I900.

R j G R U B R A M F cm 5 7 4 6 0 N ROTARY PUMP OR THE LIKE.

(Application filed Apr. 26, 1899.) (No Model.) 3 Sheets-Sheet 2.

l II'IHI INVENTOR 0 J: BY

ATTORNEY WITNESSES RRKS PETERS cm muTou'mou WASHINGTON, D4 1:.

No. 647,856. Patented Apr. I7, 1900..

I F. MARBURG, 1n.

ROTARY PUMP OR THE LIKE.

- (Application filed Apr. 26, 1899.) (NuModelJ 3 Sheats-Shaei 3.

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ATTORN EY m: Nonms PETER: 00.. monxm'na" wAsumcrron. a. c.

U ITED STATES PATENT OFFICE.

FRANZ MARBURG, JR, OF NET V YORK, N. 'Y.

ROTARY PUMP OR THE LIKE.

SPEGIFiGATION forming part of Letters Patent No. 647,856, dated April17, 1900.

Serial No. 714,474. (No model.)

To all whom it may concern:

Be it known that I, FRANZ MARBURG, Jr., a citizen of the United States,residingin the borough of Manhattan, in the city, county, and State ofNew York, have invented certain new and useful Improvements in RotaryPumps or the Like, of which the following is a specification.

This invention relates to the general class of mechanisms known asturbines, wherein the lateral strain and longitudinal thrust from thefluid are balanced; and the object of the invention is in the main toimprove the details of construction of the device and to adapt it foruse as a pump or blower.

In the accompanying drawings an embodiment of the invention isillustrated.

Figure 1. is a plan of the device as a pump with the outer casing partlybroken away at the left. axial section of the same, and Fig. 3 is atransverse vertical mid-section thereof. Fig. 4 is an enlargedfragmentary sectional view showing the sets of turbines and guides inside elevation. Fig. 5 is a sectional View similar to Fig. 2, showingthe device in the form preferred for use as a blower, and Fig. 6 is atransverse mid-section thereof.

As illustrated in Figs. 1 to 4 of' the drawings, my invention isembodied in a pump adapted for lifting a liquid. 1 is an outer casing,conveniently of cylindrical form, and 2 is an inner cylinder, which maybe cast integrally with the casing 1 and be connected thereto by ties 3.The outer cylinder or casing has heads i, provided with stufiing-boxbearings 5 for the shaft 6, which extends through the axis of thecylinder 2. This cylinder 2 is open at its ends whereat it OOIHlllll.nicates with a jacket-space 7 between the casing 1 and cylinder 2, theliquid entering said space 7 at an induction-inlet 8. Theeduction-outlet 9 for the fluid is from the middle of the cylinder 2.

. are fixed in the cylinder 2, and a plurality of Fig. 2 is alongitudinal vertical be understood that the two sets of operativemechanisms in the cylinder 2 are alike, except that the angular settingsof their blades or buckets are reversed, so that when the shaft 6 isrotated they will take in the fluid at the opposite ends of the cylinder2, respec= tively, and discharge it into the central chamber 12,connected with the outlet 9. Thus endwise or longitudinal thrust on theshaft 6 is avoided. In Fig. 4 only a part of the set of turbines andguides at the right are shown for lack of room.

The manner of mounting the turbines and guides in the cylinder will nowbe explained. The turbine 11 has a boss and is secured to the shaft 6.The guide 10 has also a boss, which loosely embraces the shaft, and aperipheral rim 10 of cylindrical form, which fits snugly into thecylinder 2 and is secured by pins 13 to two bars or strips 14 14, whichextend lengthwise of the cylinder and occupy, respectively, grooves orchannels 15 15,formed in the cylinder at opposite sides of its axis.These bars serve to accurately distance or space the guides 10 and toprevent them from rotating in the cylinder. In assembling the parts theguides and turbines are slipped onto the shaft 6 one by one in alternateorder, the turbines being secured to the shaft by keys, set-screws, orthe like and the guides secured to the strips or bars 14 by the pins 13.v

The whole operative mechanism is then passed into the cylinder 2, thebars 14 being made to engage the grooves 15 therein. The bars may beprevented from 'endwisemovement when in place by clips or detents 16 onthe ends of the cylinder 2.

It will be noted that the turbine adjacent to a guide rotates within thecylindrical rim 10 of the guide, and the rims of the several guides of aset of mechanism may abut and form a continuous cylinder, as seen at theleft in Fig. 4.

By imparting rotation to the shaft 6 in the proper direction liquid willbe taken in at both ends of thecylinder 2 and be discharged into thecentral chamber 12, and thence out at the outlet 9. The fluid forced bythe first turbines thus establishing a flow through the succession, andso on through the series, the

the delivery-pipev 9 is turned upward. The.

pump must be flushed at starting and kept full of liquid in order to getthe best results. Hence if the pump must lift on theinduction side anordinary check-valve will be required in the suction-pipe, as will beunderstood, to

keep the liquid from draining away from the pump. There may be one ormore turbines 11 in each set; but a plurality of turbines in each set ispreferred, as this enables the ro- 1 tary speed to be reduced inverselyto the number of turbines employed. The angle of. the blades int-he'turbines and guides will be varied in a known Way to suit themaximum speed at which the turbines are to be driven. In operating'thepump at starting under back-pressure or resistance to axial displacementand flow the turbines are liable to carry the liquid around withthem andnot displace it in an axial direction, and to overcome this d'iflicultyby relieving the back pressure, and

cylindrical valve-box 17, which is connected at its top by a pipe 18with thejacket-space '7' of the pump, and in this pipe is a regulatingvalve or cook 19. In the valve-box is a cy-. lindrical bell-valve 20,which has a flange at its top to rest on a seat 21 in the valve-box.When seated, as in Fig. 3, a series of ports 22 in the side wall of thevalve register with a by-pass 23, communicating with the jacketspace 7at the induction side of the pump.

. Now when the pump starts the liquid displaced and flowing through thepump to the outlet will not have sufficient force to overwise the valvewould lift and arrest the cir-,

come the head or back pressure thereat, and in order to establish andmaintain the flow this liquid is permitted to rise in the hollow of thevalve 20 and flow through the ports 22 therein and the passage 23 to theinduction side-0f the'pum'p, thus insuring circulation;

but as the pressure of the liquid from the pump-increases at the outletthe valve will be lifted, and this will cut off the circulation byclosing the ports 22. The too-ready rise of the valve is resisted byliquid in the valvebox above the valve, which must be forced out by thepiston-like valve 20 through the pipe 18, and the cook 19 permits ofthis flow being retarded in any required degree, and

thereby enabling the valve 20 to be held open forc-irculation until theproper degree of pressure is reached at the pump-outlet. Otherculationbefore the pressure from the pump sufficed to overcome the head or backpressure. r 7

Figs. 5 and 6 show a construction adapted for use as a blower. In thiscase the outer casing 1 is omitted as unnecessary, such casing-onlyserving to provide conveniently an air-tight induction-passage toconnect with the suction-pipe, and this passage is ,not needed in theblower, as the air may enter the ends of the cylinder 2 directly. Inthis construction the shaft 6 has bearings in open end pieces 24: on thecylinder 2, the other mechanisms being the same as those beforedescribed, except as to the relief deviceseen in Fig. 6. This featurediffers from that seen in Fig. 3 only'in that the space above the valve20 opens to the atmosphere by way of a controlling-cock 19 and the ports22 in the valve open to the outer air through apertures 23 in the wallof .the valve-box. Obviously as the atmosphere is the reservoir fromwhich the blower takes the air thearrangement described is equivalent toconnecting with the induction side of the pump, as in Fig. 3, foreffecting circulation. 3 v 3 I The construction of the pump, as shown inFigs. 5 and 6, will serve as a pump for liquids if submerged in a liquidto be raised. In this case the water of submergence takes the place ofthe ambient air.

It will be understood thatthe pump herein described is not of thecentrifugal class nor of the class having positive" displacement, andhence the operation of the'valve 20 mustnot only be automatic, butbedependent on the pressure of the fluid coming from the turbines. It isnot controllable by the speed of the pump, as the pump does not havepositive displacement.- The object is not to overcome the head at thedischarge in order to set the pump in motion, but to set up a flowthrough the pump where there isa head to overcome, and this has beenfound a great objection to the use of pumps of this class. 4

I-Iaving thus described my invention, I claim- I 1. In a turbinemechanism, the combination with a cylinder having induction and eductionopenings, a shaft extending through said cylinder, and turbines on saidshaft within the cylinder,,of an automatic relief device at the saideduction-outlet, comprising a normally-open valve controlling afluid-outlet,

and a'regulable resistance to the closing of said valve, substantiallyas set forth.

2. In a turbine mechanism having fixed times under a pressure whichtends to close it, from the liquid flowing to the main outlet,substantially as set forth.

3. In an axial-flow turbine mechanism, the combination with a cylinderhaving induction and eduction openings, a shaft extending through saidcylinder, and turbines on said shaft within the cylinder, of anautomatic relief device at the said eduction-outlet, comprising anormally-open valve controlling a passage connecting the eduction withthe induction side of the pump, and a regulable resistance to theclosing of said valve, substantially as set forth.

4. A turbine mechanism having turbines and non-rotating guidesalternating therewith, in combination with a relief device at theeduction-outlet of said mechanism, said device comprising anormally-open valve controlling a fluid-outlet which is not underpressure or head, and means for regulating the resistance to the closingof such valve, substantially as set forth.

5. In an axial-flow turbine mechanism, the combination with a cylinderhaving induction and eduction openings, a shaft extending through saidcylinder, and turbines on .said shaft within the cylinder, of anautomatic relief device situated at the eductionopening, said devicecomprising a normallyopen valve controlling a passage connecting theinduction and eduction sides of the mechanism, and means for regulatingthe resistance to closing of said valve, substantially as set forth. 7

6. In-a turbine mechanism, the combina tion with a cylinder havinginduction and eduction openings, a shaft extending through saidcylinder, and turbines on said shaft within the cylinder, of a branchoutlet for the fluid, a valve adapted for closing said branch outlet andopen to constant pressure from the fluid passing to the main outlet andtending to close the valve, and means for opposing a regulableresistance to the closing of said valve, substantially as set forth.

7. In an axial-flow turbine mechanism, the combination with acylinderhaving induction and eduction openings, a shaft extending through saidcylinder, turbines on said shaft within the cylinder, and non-rotativeguides in the cylinder and alternating with said turbines, of anautomatic relief device at the said eduction-outlet, said devicecomprising a normally'open-valve controlling a passage connecting theeduction with the induction side of the pump, and means for regulatingthe resistance to the closing of said valve, substantially as set forth.

8. A pump of the character described, having a by-pass connecting itsinduction and eduction sides, a normally-open and automatically-operatedvalve in said passage and adapted to close the latterwhen the pressureon the valve reaches a predetermined point, a passage connecting thevalve-chamber back of said valve with the induction side of the pump,and a manually-operative valve controlling said passage, substantiallyas set forth.

9. A pump of the character described, having a by-pass 23 between itsinduction and eduction sides, a piston-valve controlling said by-passand normally open, a pipe 18, connecting the valve-chamber back of thevalve with the induction side of the pump, and a manually-operable valvecontrolling the flow through the pipe 18,substantially as set forth.

10. In an axial-flow turbine mechanism, the combination with a cylinderadapted to receive a fluid at its ends and to discharge a fluidlaterally at its middle part, and a shaft extending through saidcylinder axially, of two sets of turbine mechanisms in and at or nearthe respective ends of said cylinder, each of said sets comprising aturbine secured to and rotating with said shaft, and a non-rotati n gguide embracing said shaft and having a cylindrical rim, bars 14, whichengage oppositely-arranged channels in the cylinder, and means forsecuring the guide to said bars, substantially as set forth.

11. In an axial-flow turbine mechanism, the combination with thecylinder 2, having induction and eduction apertures for a fluid andlongitudinal channels 15, the bars 14, to 00- cupy the respectivechannels 15, the securingpins 13, and the shaft 6, extending through theaxis of the cylinder, of the like operative mechanisms in the cylinderand near the re-' spective. ends thereof, each of said mechanismscomprising a plurality of turbines 10 and non-rotative guides 11,arranged in alternate order, the turbines being fixed to the shaft andthe guides being fixed to the respective bars 14 by the pins 13,substantially as set forth.

12. In a turbine mechanism for forcing liquids, and having fixed guides,the combina tion with a cylinder or casing having induction and eductionopenings, a shaft extending through the same, and turbines on said shaftbetween said openings, of a relief device at the eduction side,comprising a valve-chamber at the outlet connected with the inductionside of the device, and a valve in said chamber adapted to close awaste-outlet when the pressure at the main outlet rises to apredetermined extent, substantially as set forth.

In Witness whereof I have hereunto signed my name, this 21st day ofApril, 1899, in the presence of two subscribing witnesses.

FRANZ MARBURG, JR.

Witnesses:

HENRY CONNETT, PETER A. Ross.

